Purgex™ 742

Purging Compound for Automotive Interiors Applications

Product Information

Purgex™ 742 Commercial Purging Compound is engineered specifically for polypropylene copolymer applications. Like its predecessors, Purgex™ 742 has non-toxic, non-abrasive active ingredients with a polyethylene carrier. This product provides dual-cleaning action with a mechanical component and a unique active ingredient. Purgex™ 742 is a ready-to-use blend that effectively removes contamination from the screw, barrel and hot runner system. Purgex™ 742 is designed to reduce the standard amount of purging compound used, to significantly reduce purge time, and to minimize scrap.

 

Physical Description

• Blend & polyethylene and an active component
• Non-toxic, non-abrasive, and safe
• Ready to use and easy to remove

 

Features and Benefits

• High efficiency purging compound specifically designed for polypropylene copolymer applications for injection molding of automotive interior trim parts.
• Reduced amount is required for efficient purging and low scrap.
• Effectively cleans the barrel, screw, check ring, as well as hot runner systems and is safely processed through tools with valve gates.
• Is easily removed from the system with the next production resin.

Resin Compatibility and Operating Temperature

PP-Copolymer, TPOs, HDPE, LDPE, PP-Homopolymer, PE.

Operating range: 375–475°F (191–246°C). Select a processing temperature within the grade range and follow the applicable purging procedure.

Processes and Equipment

Listed processes: Injection molding.

Equipment cleaned: Cold runners, hot runners, check valves, mixing nozzles. Equipment listings do not expand the listed process applications.

Coverage follows the Product Selection Guide Matrix, Revision H (updated version supplied November 11, 2026). Contact our technical team for applications not listed. Use the product selector or compare Purgex grades.